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Vol. 114. Núm. 6.
Páginas T545 (junio 2023)
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Vol. 114. Núm. 6.
Páginas T545 (junio 2023)
Images in Dermatology
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[Translated article] Long-Standing Gouty Panniculitis
Paniculitis gotosa de larga evolución
Visitas
1949
T. Ródenas-Herranz, L. Linares-González, R. Ruiz-Villaverde
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Servicio de Dermatología, Hospital Universitario San Cecilio, Granada, Instituto de Investigación Sanitaria (IBS) Granada, Granada, Spain
Contenido relaccionado
Actas Dermosifiliogr. 2023;114:54510.1016/j.ad.2022.02.031
T. Ródenas-Herranz, L. Linares-González, R. Ruiz-Villaverde
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A 53-year-old man with a history of gout was evaluated in the dermatology department for the presence of an ulcerated, densely friable nodule with a deposit of hard white material on the surface, without purulent discharge (Fig. 1A). The nodule had appeared 6 months earlier. Soft tissue ultrasound revealed a heterogeneous mass with a lobulated border and hyperechoic trabecular structures (Fig. 1B). Ultrasound examination of the right knee revealed minor effusion and the presence of the double contour sign, which is considered highly suggestive of urate deposition in the hyaline cartilage (Fig. 1C). Histology showed amorphous basophilic material surrounded by a foreign-body-like giant-cell reaction with focal lymphohistiocytic infiltrate (Fig. 1D). Uric acid levels were 9.5mg/dL (3.4–7.0mg/dL). All other laboratory parameters were within the normal range. In terms of the pathophysiology of gouty panniculitis, venous stasis and pre-existing tissue damage are factors that, together with repeated microtrauma, make patients more predisposed to urate crystal deposition on subcutaneous tissue. Serum uric acid levels do not appear to be directly related to the development of panniculitis, as was previously suggested.

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